/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.apis.app;

// Need the following import to get access to the app resources, since this
// class is in a sub-package.
import com.example.android.apis.R;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.os.Parcel;
import android.os.RemoteException;
import android.widget.Toast;

/**
 * This is an example of implementing an application service that will run in
 * response to an alarm, allowing us to move long duration work out of an intent
 * receiver.
 * 
 * @see AlarmService
 * @see AlarmService_Alarm
 */
public class AlarmService_Service extends Service {
	NotificationManager mNM;

	@Override
	public void onCreate() {
		mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

		// show the icon in the status bar
		showNotification();

		// Start up the thread running the service. Note that we create a
		// separate thread because the service normally runs in the process's
		// main thread, which we don't want to block.
		Thread thr = new Thread(null, mTask, "AlarmService_Service");
		thr.start();
	}

	@Override
	public void onDestroy() {
		// Cancel the notification -- we use the same ID that we had used to
		// start it
		mNM.cancel(R.string.alarm_service_started);

		// Tell the user we stopped.
		Toast.makeText(this, R.string.alarm_service_finished,
				Toast.LENGTH_SHORT).show();
	}

	/**
	 * The function that runs in our worker thread
	 */
	Runnable mTask = new Runnable() {
		public void run() {
			// Normally we would do some work here... for our sample, we will
			// just sleep for 30 seconds.
			long endTime = System.currentTimeMillis() + 15 * 1000;
			while (System.currentTimeMillis() < endTime) {
				synchronized (mBinder) {
					try {
						mBinder.wait(endTime - System.currentTimeMillis());
					} catch (Exception e) {
					}
				}
			}

			// Done with our work... stop the service!
			AlarmService_Service.this.stopSelf();
		}
	};

	@Override
	public IBinder onBind(Intent intent) {
		return mBinder;
	}

	/**
	 * Show a notification while this service is running.
	 */
	private void showNotification() {
		// In this sample, we'll use the same text for the ticker and the
		// expanded notification
		CharSequence text = getText(R.string.alarm_service_started);

		// Set the icon, scrolling text and timestamp
		Notification notification = new Notification(R.drawable.stat_sample,
				text, System.currentTimeMillis());

		// The PendingIntent to launch our activity if the user selects this
		// notification
		PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
				new Intent(this, AlarmService.class), 0);

		// Set the info for the views that show in the notification panel.
		notification.setLatestEventInfo(this,
				getText(R.string.alarm_service_label), text, contentIntent);

		// Send the notification.
		// We use a layout id because it is a unique number. We use it later to
		// cancel.
		mNM.notify(R.string.alarm_service_started, notification);
	}

	/**
	 * This is the object that receives interactions from clients. See
	 * RemoteService for a more complete example.
	 */
	private final IBinder mBinder = new Binder() {
		@Override
		protected boolean onTransact(int code, Parcel data, Parcel reply,
				int flags) throws RemoteException {
			return super.onTransact(code, data, reply, flags);
		}
	};
}
